Quote:
Originally Posted by 1.5Ldave
Iridium is a colder spark, ive seen them used to help prevent pre detonation in boosted motors. Platinum lasts a very long time, but it better for the price you pay. Many cars perform as well as they can with the copper plugs, which also happen to be the cheapest. I would look in your owners manual and see what plugs it recommends and use those.
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That is exactly what I learned as well. hot fast for little short stroke n/a gas is the platinum. single electrode only, no crazy stuff. I slapped them in a 23 yr old egr'd to damn near death subaru...(if you use your brain and take deep breathes, you too can realize what egr does....)
and it till has the same bosch platinums, several years. I got confident enough, I even kept used ones.